RO water does indeed have very little mineral content, which makes it a great base to build upon. IMO pH stabilizer is a crap item sold at your LHBS and I never use it - it doesn't work and could do more harm than good. I recommend downloading some brewing water software such as Bru'nWater - I use it and it works consistently well. In it you can declare that you're using 100% RO water and it will give you a list of water profiles to choose from for different styles and brewing cities, and the additions to make to your water to get there. Good luck !
EDIT - Calcium Chloride is what will help the maltiness stand out, but Bru'nWater has an excellent 'Info' page that will help you understand the big picture.